7484401
This number is a prime.
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The product of the initial six hexagonal numbers plus one is the prime. We note that 1 * 6 * 15 * 28 * 45 *
66 + 1 = 7484401. [Schiffman]
Submitted: 2026-02-15 03:52:57; Last Modified: 2026-02-15 04:14:57.
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